Piston for internal combustion engine, compressor or the like

Details Piston for internal combustion engine, compressor or the like Piston for internal combustion engine, compressor or the like

2007-02-01

2008-08-26

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Rotary

C123S193600, C092S158000

Reexamination Certificate

active

07415961

ABSTRACT:
A piston for internal combustion engine, compressor or the like, includes a piston ring, a piston skirt having a piston skirt wall. One or more lubricant channels and reservoirs are provided on an outer surface of the piston skirt. Lubricant is conducted to an outer surface of a piston skirt of a piston through the lubricant channels which are communicating an inner surface of the piston skirt with the outer surface thereof. The lubricant is able to be reserved in the lubricant reservoirs provided on the outer surface of the piston skirt to maintain lubrication between the piston skirt and cylinder wall so as to reduce a friction between the cylinder and the piston skirt, reduce loss of power due to friction and heat, improve the output power, reduce the fuel consuming, noise and exhaust, and achieve fuel saving and environment protection.

REFERENCES:
patent: 1336342 (1920-04-01), Blankfield
patent: 1427205 (1922-08-01), Grant
patent: 3161188 (1964-12-01), Liebel et al.
patent: 4280455 (1981-07-01), Yamaguchi et al.
patent: 4776302 (1988-10-01), Hundertmark et al.
patent: 7171936 (2007-02-01), Rein et al.
patent: 373516 (1990-06-01), None
patent: 54116516 (1979-09-01), None
patent: 58170840 (1983-10-01), None

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